Blowing needle structure of blowing mold

Abstract

The utility model relates to the technical field of blowing needle structures, in particular to a blowing needle structure of a blowing mould, which comprises a butt joint, and the butt joint is fixed with a blowing needle sleeve through a butt joint piece. The butt joint piece comprises a first fixing ring, the first fixing ring is installed on the butt joint, a plurality of check blocks are arranged on the first fixing ring in a circumferential array mode, inclined faces are arranged on the check blocks, a second fixing ring is fixed to the blowing needle sleeve, a plurality of fixing blocks are arranged on the second fixing ring in a circumferential array mode, and the fixing blocks are clamped with the check blocks. The blowing needle sleeve corresponds to the butt joint, the inclined face of the check block makes contact with the fixing block, when the blowing needle sleeve is rotated, the fixing block is driven to move upwards under the action of the inclined face of the check block, when the check block and the fixing block are completely clamped, the butt joint and the blowing needle sleeve are connected, and it is guaranteed that the height of the butt joint and the height of the blowing needle sleeve are the same after installation. And the blowing needle mold does not need to be positioned again, so that the operation efficiency is improved, and the mounting and dismounting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to blow needle structure, specifically a blow needle structure for blow molding molds, and belongs to the technical field of blow needle structure. Background Technology

[0002] Blow molding dies are used in the molding process of oil bottles. In existing technology, a blow molding needle is a mold accessory used for blow molding hollow plastic products. Its structure typically includes an outer sleeve and a longer needle fitted into the sleeve's shaft hole. A gap is left between the needle and the sleeve hole wall to allow high-pressure gas to pass through. The needle has an upward reset device and a bottom plug that seals the bottom opening of the sleeve. During blow molding, high-pressure gas presses the needle down and blows it out through the gap between the needle and the sleeve hole wall. The bottom of the needle comes into contact with the high-temperature molten plastic, and under the action of the high-pressure gas, a hollow plastic product is formed.

[0003] However, the blow-needle sleeve and the mold needle are connected by threads. Under the premise of ensuring sealing, it is impossible to accurately determine the number of rotations of the blow-needle sleeve, which results in inconsistent height of the blow-needle sleeve. After the blow-needle sleeve is installed, the height of the mold needle assembly in the blow mold needs to be readjusted, which is inefficient. Moreover, the repeated disassembly and reassembly of the threaded connection can easily cause stripping. Utility Model Content

[0004] The purpose of this utility model is to provide a blow needle structure for blow molding molds in order to solve the above problems. When the blow needle sleeve is rotated, the fixed block is driven to move upward under the action of the inclined surface of the stop block. When the stop block and the fixed block are fully engaged, the connector and the blow needle sleeve are connected, ensuring that the connector and the blow needle sleeve are at the same height after installation. There is no need to reposition the blow needle mold, which improves the operation efficiency and the installation and disassembly efficiency.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a blow-needle structure for a blow molding die, including a connector threaded to the die needle, wherein the connector and the blow-needle sleeve are fixed by a mating part; the mating part includes a first fixing ring, the first fixing ring being mounted on the mating head, the first fixing ring having a plurality of stops arranged in a circumferential array, the stops having an inclined surface, the blow-needle sleeve having a second fixing ring, the second fixing ring having a plurality of fixing blocks arranged in a circumferential array, the fixing blocks engaging with the stops.

[0006] Preferably, a sealing ring is installed at the bottom end of the connector, and the sealing ring abuts against the blow needle sleeve, thereby improving the sealing performance between the blow needle sleeve and the connector.

[0007] Preferably, a nut is fixed on the mating head, and the nut is located at the top of the fixing ring to facilitate rotation of the mating head.

[0008] Preferably, a second nut is fixed on the blow needle sleeve, and the second nut is located at the bottom end of the second fixing ring, which facilitates the rotation of the blow needle sleeve.

[0009] Preferably, an anti-detachment block is fixed to the end of the stop block, and the fixing block abuts against the anti-detachment block to prevent the stop block from falling off the fixing block during rotation.

[0010] Preferably, one of the stops is provided with a rectangular groove, and one of the fixing blocks is threaded with a bolt that mates with the groove. The end of the bolt extends into the groove, which facilitates the positioning of the stop and the fixing block and improves stability.

[0011] The beneficial effects of this utility model are as follows: A fixing ring is installed on the mating head, and multiple stops are arranged in a circumferential array on the fixing ring. Each stop has an inclined surface. A fixing ring is fixed on the blow needle sleeve, and multiple fixing blocks are arranged in a circumferential array on the fixing ring. The fixing blocks engage with the stops. The mating head is threaded onto the mold needle. When replacing the blow needle sleeve, the blow needle sleeve is aligned with the mating head, so that the inclined surface of the stop contacts the fixing block. When the blow needle sleeve is rotated, the inclined surface of the stop causes the fixing block to move upward. When the stop and the fixing block are fully engaged, the mating head and the blow needle sleeve are connected. This ensures that the mating head and the blow needle sleeve are at the same height after installation, eliminating the need to reposition the blow needle mold, improving operational efficiency, and also improving installation and disassembly efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the blow needle sleeve of this utility model;

[0014] Figure 3 This is a schematic diagram of the connection structure between the blow needle sleeve and the connector of this utility model.

[0015] Figure 4 for Figure 3 The diagram shown is an enlarged view of the structure of part A.

[0016] Figure 5 This is a schematic diagram of the connection structure between the stop block and the anti-detachment block of this utility model.

[0017] In the diagram: 1. Blow needle sleeve; 2. Connector; 3. Nut 1; 4. Nut 2; 5. Connecting part; 501. Fixing block; 502. Fixing ring 1; 503. Stop block; 504. Anti-detachment block; 505. Inclined surface; 506. Fixing ring 2; 507. Slot; 6. Bolt; 7. Sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-5 As shown, the blow-needle structure of the blow molding die includes a connector 2 threaded to the die needle. The connector 2 and the blow-needle sleeve 1 are fixed by a mating part 5. The mating part 5 includes a first fixing ring 502, which is installed on the connector 2. The first fixing ring 502 has multiple stops 503 arranged in a circular array on its circumference. The stops 503 have inclined surfaces 505. The blow-needle sleeve 1 is fixed with a second fixing ring 506, which has multiple fixing blocks 501 arranged in a circular array on its circumference. The fixing blocks 501 engage with the stops 503. When the blow-needle sleeve 1 is rotated, the inclined surfaces 505 of the stops 503 cause the fixing blocks 501 to move upward. The stops 503 and the fixing blocks 501 are completely engaged and cannot move further, thus completing the connection between the connector 2 and the blow-needle sleeve 1. This ensures that the connector 2 and the blow-needle sleeve 1 are at the same height after installation, eliminating the need to reposition the blow-needle mold and improving operational efficiency, as well as installation and disassembly efficiency.

[0020] As a technical optimization of this utility model, a sealing ring 7 is installed at the bottom end of the connector 2, and the sealing ring 7 abuts against the blow needle sleeve 1; thereby improving the sealing performance between the connector 2 and the blow needle sleeve 1.

[0021] As a technical optimization of this utility model, a nut 3 is fixed on the connector 2, and the nut 3 is located at the top of the fixing ring 502; this facilitates the rotation of the blow needle sleeve 1 by engaging the nut 3 with a wrench. A nut 4 is fixed on the blow needle sleeve 1, and the nut 4 is located at the bottom of the fixing ring 506; this facilitates the rotation of the blow needle sleeve 1 by engaging the nut 4 with a wrench.

[0022] As a technical optimization of this utility model, the end of the stop block 503 is fixed with an anti-detachment block 504, and the fixing block 501 abuts against the anti-detachment block 504; the anti-detachment block 504 prevents the fixing block 501 from separating from the stop block 503 during rotation, and the stop block 503 and the fixing block 501 are completely locked and cannot continue to move, so that the connector 2 and the blow needle sleeve 1 are connected, ensuring that the connector 2 and the blow needle sleeve 1 are at the same height after installation.

[0023] As a technical optimization of this utility model, one of the stop blocks 503 is provided with a slot 507, the slot 507 is rectangular, and a bolt 6 that mates with the slot 507 is threaded onto one of the fixing blocks 501, the end of the bolt 6 extends into the inside of the slot 507; rotating the bolt 6 causes the end of the bolt 6 to extend into the slot 507, preventing the fixing block 501 and the stop block 503 from moving, thereby improving stability.

[0024] In use, this invention first uses a wrench to engage with nut 3, rotating nut 3 causes connector 2 to rotate, connecting connector 2 to the die needle thread. When replacing the blow needle sleeve 1, align the blow needle sleeve 1 with connector 2. Use one wrench to hold nut 3 to prevent connector 2 from rotating, and use another wrench to drive nut 4 to rotate, causing the inclined surface 505 of stop block 503 to contact the fixing block 501. When the blow needle sleeve 1 is rotated, the inclined surface 505 of stop block 503 causes the fixing block 501 to move upward. When the fixing block 501 contacts the anti-detachment block 504, the anti-detachment mechanism is activated. The block 504 prevents the fixed block 501 from separating from the stop block 503 during rotation. The stop block 503 is fully engaged with the fixed block 501 and cannot move further, thus completing the connection between the connector 2 and the blow needle sleeve 1. This ensures that the connector 2 and the blow needle sleeve 1 are at the same height after installation, eliminating the need to reposition the blow needle mold and improving operational efficiency. It also improves the efficiency of installation and disassembly. A sealing ring 7 is provided between the connector 2 and the blow needle sleeve 1 to ensure sealing. Then, the bolt 6 is rotated, and the end of the bolt 6 extends into the slot 507 to prevent the fixed block 501 and the stop block 503 from moving, thereby improving stability.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A blow-pin structure for a blow molding die, comprising a connector (2) threadedly connected to the die pin, characterized in that: The connector (2) and the blow needle sleeve (1) are fixed together by a connecting piece (5); the connecting piece (5) includes a fixing ring one (502), the fixing ring one (502) is installed on the connector (2), the fixing ring one (502) is provided with a plurality of stops (503) arranged in a circular array on the fixing ring one (502), the stops (503) are provided with a slope (505), the blow needle sleeve (1) is fixed with a fixing ring two (506), the fixing ring two (506) is provided with a plurality of fixing blocks (501) arranged in a circular array on the fixing ring two (506), and the fixing blocks (501) engage with the stops (503).

2. The blow needle structure of the blow molding die according to claim 1, characterized in that: A sealing ring (7) is installed at the bottom end of the connector (2), and the sealing ring (7) abuts against the blow needle sleeve (1).

3. The blow needle structure of the blow molding die according to claim 1, characterized in that: A nut (3) is fixed on the connector (2), and the nut (3) is located at the top of the retaining ring (502).

4. The blow needle structure of the blow molding die according to claim 1, characterized in that: The blow needle sleeve (1) is fixed with a second nut (4), which is located at the bottom end of the second fixing ring (506).

5. The blow needle structure of the blow molding die according to claim 1, characterized in that: The end of the stop (503) is fixed with an anti-detachment block (504), and the fixing block (501) abuts against the anti-detachment block (504).

6. The blow needle structure of the blow molding die according to claim 1, characterized in that: One of the stops (503) is provided with a slot (507), which is rectangular.

7. The blow needle structure of the blow molding die according to claim 6, characterized in that: One of the fixing blocks (501) is threaded with a bolt (6) that mates with a slot (507), the end of the bolt (6) extending into the interior of the slot (507).

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